| Name | CVE-2010-2023 |
| Description | transports/appendfile.c in Exim before 4.72, when a world-writable sticky-bit mail directory is used, does not verify the st_nlink field of mailbox files, which allows local users to cause a denial of service or possibly gain privileges by creating a hard link to another user's file. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| exim4 (PTS) | jessie, jessie (lts) | 4.84.2-2+deb8u13 | fixed |
| stretch (security) | 4.89-2+deb9u8 | fixed | |
| stretch (lts), stretch | 4.89-2+deb9u14 | fixed | |
| buster, buster (lts) | 4.92-8+deb10u11 | fixed | |
| buster (security) | 4.92-8+deb10u9 | fixed | |
| bullseye | 4.94.2-7+deb11u3 | fixed | |
| bullseye (security) | 4.94.2-7+deb11u4 | fixed | |
| bookworm | 4.96-15+deb12u6 | fixed | |
| bookworm (security) | 4.96-15+deb12u5 | fixed | |
| trixie | 4.98-2 | fixed | |
| sid | 4.98-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| exim4 | source | (unstable) | 4.72-1 | low |
[lenny] - exim4 <no-dsa> (Minor issue)